What I understand is that with having 2 pvp trinkets we get the bonus enough to put us away from the pve ones. I dont know what to fell about it- my lock will get raped in 5.4 so it might be good, but I dont want to put off my shado pan trinket or breath of hydra. Also, anyone with the idea how it will affect the human racial?

I'd hope it's for all pvp trinkets, since they're not exactly amazing right now. The alternative is that it's only for a medallion/emblem combo, but I don't see why they'd limit it to battlemasters like that. I'm sure it'll work with badges and insignia trinkets too.

I like that they went with damage reduction instead of increase for this too. Here's hoping they realize how strong damage is right now and don't compensate this with more global healing nerfs.

10% dmg reduction on the 2 pvp trinkets means, that unless these trinkets are absolutely insanely overpowered, nobody will use a pve trinket, as 10% damage reduction is major. So don't sweat it, this won't be 4.3 again.

Definitely will effect all PvP trinkets, would be stupid otherwise. I think it will depend on class as to if that's worth it though, some of those SoO trinkets on the front page are absolutely cray, I mean the 10% chance to do 1/3 extra damage, you crit someone for 80k and get another like 26k immediately after could be pretty nice. Will have to wait and see. The PvP trinkets will definitely be good on classes that get tunneled a lot, Warlocks, healers, etc. but on classes that have a lot of uptime and less time being attacked, the PvE trinkets might be better.

I like this change, but many PvE trinkets which were datamined(see the news) are better I think.

No more double trinkets for you humans! Hah!

You can't be so certain of that, though. Like some have already mentioned and me aswell: Most likely the dmg reduction bonus will be applied to all PvP trinkets to outweigh PvE ones. Classes that already have great burst will most likely go for the 10% dmg reduction, while classes which are already quite tanky will most likely still try to use PvE trinkets I guess.

All in all, This should be sweet considering the damage on the PTR is completely out of control atm (50k arcane shots, 110k rising sun kicks on shamans and 157k on a dk).